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Method and device for decoking high-temperature heating surface of supercritical tower boiler by using frequency-adjustable high-sound-intensity sound waves

A tower furnace and supercritical technology, which is applied in the direction of combustion method, solid residue removal, lighting and heating equipment, etc., can solve the problem of coking on the high-temperature heating surface of the boiler, achieve energy saving, broad application prospects, and simple implementation method Effect

Pending Publication Date: 2017-09-15
NANJING CHANGRONG ACOUSTIC INC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings and deficiencies of the above-mentioned prior art, provide a method and device for decoking the high-temperature heating surface of a supercritical tower furnace with adjustable frequency and high-sonic intensity, and solve technical problems such as coking of the high-temperature heating surface of the boiler

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  • Method and device for decoking high-temperature heating surface of supercritical tower boiler by using frequency-adjustable high-sound-intensity sound waves

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Embodiment 1

[0030] This embodiment provides a method for decoking the high-temperature heating surface of a supercritical tower furnace with frequency-adjustable high-intensity sound waves. Coke and ash removal, the specific implementation method is to install the sound conduit of the frequency-adjustable high-sonic-intensity sound wave generator at the position of the high-temperature superheater and high-temperature reheater inside the tower furnace for decoking and ash removal. The frequency-adjustable high-intensity sound source provides defocusing sound waves of a specific frequency. The defocusing sound waves are transmitted into the high-temperature heating surface through the sound conduit, and the sound waves diffuse and propagate inside the high-temperature heating surface. When the coke is gray, it will drive the coke to vibrate, thereby destroying the adhesion between the coke and the metal surface of the heating surface. Once the adhesion between the coke and the metal surface...

Embodiment 2

[0033] This embodiment provides a device for frequency-adjustable high-intensity sound wave decoking on the high-temperature heating surface of a supercritical tower furnace, which includes a frequency-adjustable high-intensity sound source arranged outside the high-temperature heating surface of a supercritical tower furnace, and a high-intensity sound source arranged in a supercritical tower Acoustic ducts at the position of the high temperature superheater and high temperature reheater inside the furnace.

[0034] Specific as figure 1 As shown, the high-temperature heating surface of the supercritical tower furnace provided by this embodiment can be used for frequency-adjustable high-intensity sound wave decoking. Sound source 3, the second adjustable frequency high-intensity sound source 4, the first sound conduit 5 and the second sound conduit 6, wherein the first sound conduit 5 is arranged inside the supercritical tower furnace towards the high-temperature reheater 7, a...

Embodiment 3

[0038]Taking a 600MW tower furnace unit in a power plant as an example, the specific implementation method is as follows:

[0039] On the high-temperature heating surface of the tower furnace: the high-temperature superheater and the high-temperature reheater are equipped with acoustic wave decoking equipment.

[0040] Among them, two sets of frequency-adjustable high-intensity sound wave decoking equipment are installed symmetrically on both sides of the high-temperature superheater. During normal operation, the frequency-adjustable high-sound intensity sound wave decoking equipment provides sound waves with a frequency of 20-8000 Hz, and the sound waves pass through a specific sound guide. Introduce high-intensity sound waves into the flue where the high-temperature superheater is located, remove the coke on the surface of the high-temperature superheater, increase the heat transfer efficiency of the high-temperature superheater, and ensure the stable operation of the unit. ...

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Abstract

The invention discloses a method and a device for decoking the high-temperature heating surface of a supercritical tower boiler by using frequency-adjustable high-sound-intensity sound waves. The method comprises the step of carrying out decoking and ash removal on a high-temperature superheater and a high-temperature reheater of the supercritical tower boiler by employing the frequency-adjustable high-sound-intensity sound waves. The device comprises frequency-adjustable high-intensity sound sources arranged at the exterior of the high-temperature heating surface of the supercritical tower boiler, the high-temperature superheater arranged in the supercritical tower boiler, and sound transmission tubes located at the high-temperature reheater. The method is simple in process, and saves capital and manpower investment. Through a frequency-adjustable high-sound-intensity sound wave generation device, and the high-temperature superheater and the high-temperature reheater that are arranged on the high-temperature heating surface of the supercritical tower boiler, the coking problem of the high-temperature heating surface is solved, the potential safety hazards of the supercritical tower boiler are eliminated, the heat exchange efficiency of the heating surface is improved, and the purpose of energy conservation is realized.

Description

technical field [0001] The present invention relates to acoustic wave decoking equipment, in particular to a frequency-adjustable acoustic wave decoking equipment and its installation and implementation method, in particular, it is used in the field of thermal power, especially in coal-fired units, and the high-temperature heating surface of supercritical tower furnaces can be adjusted for high temperature. Method and device for decoking with sound intensity and acoustic wave. Background technique [0002] With the increasingly stringent energy conservation and emission reduction standards, the energy conservation and emission reduction work of large thermal power units has been paid more and more attention. The boiler is the core equipment of the thermal power station and one of the key links in the energy conversion of the thermal power station. The thermal efficiency of the boiler directly affects the fuel utilization rate of the thermal power station. During the product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23J3/00F23J3/02
CPCF23J3/00F23J3/02
Inventor 张荣初孙卫国林云泽朱君举邹怡然
Owner NANJING CHANGRONG ACOUSTIC INC
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